Gate-valve.



A. J. COLLAR.

GATE VALVB.

APPLICATION FILED NOV. 3, 1909.

Patented Jan. 17,1911.

DQNIRAM J. COLLAR, GF YREKA.' CALIFORNIA.

GATE-VALVE.

Specifica tion of Letters Patent,

Patented Jan. 17, 1911.

Application filed November 3. 1909. Serial No. 526,031.-

T o all whom it 'may concern.'

Be it known that I, AnoNInaM J. COLLAR, a citizen of the United States,reslding at Yreka. inthe county of Siskiyou and State of California,have invented new and useful improvements in Gate-Valves, of which thefollowing is a specification.

This invention relates to valves, and pertains especially to gate valvesand ditch gates.

An important purpose 0f my invention is to provide a simple, reliablegate valve'designed tolessen the friction encountered in operating the.valve-gate.

It consists in the combination of parts, and in details of constructionwhich will be more fully explained by reference to the accompanyingdrawings, in whichy Figure 1 is a section on line m--w F ig. 2. Fig. 2is a vertical section of the valve on line g/-g/, Fig. 3, showing thestem in elev ation. vFig. 3 is a central, horizontal section.

The 'feature of this valve, to which particular attention is directed,is the means by which the operation of the gate is accelerated and madeeasier, and while shown as comprlsing a casing A adapted to be coupledto a pipe System it is to be understood that this casing may be designedto comply with any requirements, or may be dispensed With entirely, andthe gate 2 and its correlated parts may be mount-ed in concrete, as indams, ditch-walls, coffers, or in any environment Where a valve of largecapacity is needed. The principle is equally applicable to small cocksand valves for ordinary uses. In this instance, the casing A is providedwith an inclined seat'which may be removable or integrah and which maybe of any desirable area and shape. T he gate 2 is adapted to be raisedor lowered by means of a stem 4 which is forked at its lower portionforming hooks 5 5 straddlin the seat 3, and vertically slidable in pocets or channels 6--6 in the sides of the casing A. When the valve gate 2is in its lowermost osition, it is held tightly against the inclinedseat 3 by the pressure of fluid in the inlet side 7 of the valve, thuscut-ting off flow to the outlet 8. One face 9 of each hook is inclinedto correspond with the angle of the seat 3, and against the faces 9rollers or balls 10 are adapted to bear. A suitable number of theserollers are freely mounted in recesses 11 contiguous to the verticaledges of the gate 2, and the opposite face of each hook bar 5 isserrated or provided with racks 12 engaging with a plurality of pinions13 which, when the valve-gate 2 is down, assume a position approximatelyunder the gate, traveling upward as the gate is raised, each pinionbeing restrained in its spacing from the adjacent ones by -means of therack 12, and a complementary rack-bar 11 inserted in slots 15 in thecasing.

The operation of the valve is as follows: Power being applied in asuitable, convenient manner at the upper end of the stem 4, the initialvert-ical motion of the hooks or arms 5 causes the cam or inclined faces9 to engage the rollers 10. and the continued raisingof the hooks 'iseffective through lthe rollers to slightly press the gate 2 away fromits seat 3. In a valve of the proportions shown, a vertical movement ofone and one-half inches will move t-he gate horizontally, one-eighthinch, and a further lifting of the stem causes the hook 5 to engage thelower edge of the gate 2, and raise 1t vertically to the dotted lineposit-ion, thus open' mg'the valve to its full extent, meanwhile thepinions 13 have rolled upwardly along of travel of the hooks .fi-5,always maintaining their given space between centers. by lowering thevalve-stem 4 the gate is again brought into register with itsiseat 3until its lower edge encounters a sto shoulder 1G, when pressure willcause 1t to again tightly seat itself.

' By this construction I have found that a valve may be opened with theapplication of very little ower, and cannot stick, is easily assembleand may be repaired by simply removing the cap 17 ofthe casing.

Havin thus described my invention, what I c aim and desire to secure byLetters Patent is 1. The combination in a gate valveLof an inclinedvalve seat, al valve movable transversely of the -lluid passage andclosable upon said seat, a stem having inclined faces substantiallyarallel with the inclined valve seat, an means engaging the valvewhereby the valve is movedl from its seat previously to its beinglifted.

2. The combinationin a. gate valve, of an inclined Valve seat, a valvemovable transversely of the fluid passage, and closable upon said seat,a stem having inclined faces substantially arallel with the inclinedvalve seat, antifrictional devices located between .the valve and theinclined stem faces, and means carried by the stem engageable with thevalve to lift and move it from its seat. l A

3. The Combination with a gate valve movable transversely of a fluidpassage, and having an inclined seat against-which it is closable, ofpockets in the`back of the valve, a lifting stem having inclined facescorresponding with the incline of the valve seat, rolling antifrictionalmembers located in the valve pockets and contacting with the inclinedfaces of the stem whereby the rst lifting of the stem moves the valveaway from its seat, and means carried by the stem whereby the valve issubsequently..

raised to an open position.

4. The combination with a fluid passage,l

and a gate or valve movable transversely thereto, of a seat againstwhich the valve is closable, pockets or chambers formed in the back ofthe valve, rolling bearings carried in said pockets, a valvev stemhaving a forked lower end, said forks having inclined surfacescorresponding with the in- `cline of the valve seat, and againstl whichsurfaces the rolling bearings' contact, and projections from the bottomofthe stem forks adapted to engage and lift the valve after the valvehas been moved from its seat by the action of the rolling bearingsagainst the inclines of the stem.

v5. In a gate valve, an inclined seat against whichthe gate Vis.closable, antifrictional devices located in chambers on .the back of thevalve uponeach side ofthe conduit, a vertically movable stem havingforks with inclined su'rfaces at the lower ends against which theantifrictional devices may roll while advancing in their chambers, to

forks, Xed guides parallel .first force the valve from its seat, andprojections from the lower ends of the forks to subsequently engage. andlift the valve.

an inclined seat against antifrictional 6. In a gate valve, which thegate is closable, devices located in chambers on the back of the valveupon each side of the conduit, a `vertically movable stem having forkswith inclined surfaces at the lower 4ends against which theantifrictional devices may roll while advancing in their chambers, tofirst l force the valve from its seat, and .projections from the lowerends of the forks to subsequently engage and lift the valve, guides uponthe vertical rear edges of the therewith, and interengaging meansmovable between the parallel guides.

7. In a gate valve, an inclined seat against which the gate is closable,antifrictional deviceslocated in chambers on the back of the valve uponeach side of the conduit, a vertically movable st em having forks withinclined surfaces at the lower ends against which the antifrictionaldevices may roll while advancing in their chambers, to rst force thevalve from its seat, projections from the lower ends of the forks tosubsequently engage and lift the valve, rack teeth y upon the vertical,rear edges of the forks, xed opposed rack bars parallel with saidedges, and pinions engaging and adapted to roll up and downl between therack bars.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

ADONIRAM J. COLLAR. Witnesses:

R. S. BERRY, W. R. DAVIS.

